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Updated: Dec 13, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Published on: August 12, 2013

Terahertz beam steering using active diffraction grating fabricated by 3D printing.

Johannes M Seifert, Goretti G Hernandez-Cardoso, Martin Koch

|August 6, 2020

Summary

This summary is machine-generated.

We developed variable-period diffraction gratings for terahertz frequencies, enabling active control over beam steering. These novel gratings show potential for advanced terahertz communication systems.

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Area of Science:

Optics and Photonics
Electromagnetism
Materials Science

Background:

Terahertz (THz) frequencies present unique challenges for signal manipulation.
Traditional diffraction gratings lack dynamic tunability for THz applications.

Purpose of the Study:

To introduce and characterize variable-period diffraction gratings for THz frequencies.
To demonstrate active beam steering capabilities using these novel gratings.

Main Methods:

Design and fabrication of variable-period diffraction gratings.
Experimental characterization of grating performance at THz frequencies.
Demonstration of active beam steering driven by acoustic waves.

Main Results:

Successful fabrication and characterization of the proposed gratings.
Active shifting of the deflection angle for specific frequencies was achieved.
Demonstrated active beam steering using a speaker to drive the gratings.

Conclusions:

Variable-period diffraction gratings are a viable technology for THz applications.
The developed gratings offer active control over beam steering.
Potential applications in terahertz communications and sensing.